The Boathouse Theatre is a theatre at 12 Horton Street, Mayfield, Blenheim 7201, rated 4.8 on Google. It is home to the Marlborough Repertory Society, an amateur theatre group formed in 1948. The website says the theatre was built from a storage shed for rowing skiffs, and was designed by Raymond Boyce of Wellington. It describes more than 100 productions, including full length and one act plays, musical theatre, touring productions, theatre festivals, book festivals and members' club nights. It also has an archive of past shows, with productions from 1947 to 2000 listed by decade. For theatre lovers in Blenheim, the Boathouse on Horton Street is a local venue for amateur productions, set where the Taylor and Ōpaoa rivers meet.